The Unico M220 Dual Head Microscope is designed for High School Biology and includes an Arm-Mounted Cord Wrap, Dust Cover and Instruction Manual. This durable and reliable microscope is built to last. Select from a wide range of models and features to meet your needs. Pick from traditional models with Cool-Lite Fluorescent Bulbs or LED Bulbs. Warranty: Limited Lifetime Warranty. A selection of heads are available; chose from models with an Inclined Monocular Head to Dual, or "Teaching" Heads. All models are Parfocal and Parcentered. All Stages are drilled and tapped to accept optional Mechanical Stages; while certain models are available with mechanical stages already installed. Unico M220 Dual Head Microscope Size & Weight: Size: 8.5in x 5in x 11.5in (216mm x 127mm x 292mm). Weight: 8lbs (3.6kg). Shipping Size: 12in x 8in x 16in (305mm x 203mm x 406mm). Shipping Weight: 9lbs (4.1kg). Unico M220 Dual Head Microscope Specifications: Stage Configuration: M220FLD: Plain, Tapped. M220FLDM: Mechanical. Head: Dual Head. Eyepiece: 10x WF (2). Objectives: 4x, 10x, 40x. Condenser: NA 0.65. Diaphragm: Disc, 5-Hole. Illumination: Fluorescent. Bulb: 7 Watt. Focusing: Coarse/Fine. Unico M220 Dual Head Microscope Literature: Unico Basic Laboratory Microscopes Brochure